Tham khảo tài liệu 'professional information technology-programming book part 39', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Regardless of the technique used if the surface of what you knockout is even slightly reflective you will probably have some traces of the original background color around the edges. This reflected color is easily eliminated. Choose the Brush tool and choose Color from the Options bar s Mode menu. Go to the Layers palette and click the Lock Transparency icon. Press Opt Alt to momentarily convert the Brush to an Eyedropper and click in an untinted portion of the item to pick up its color. Now just brush over the reflected color from the old background. When you place the same knockout into a target image you can do that same thing but this time pick up the color from the layer that will be the background image. You can see the result of the re-coloring in Figure 9-10. Figure 9-10. This cutout was made with the help of one of the Frames Custom Shape tools. You could also use Layer Style to bevel the edges of shapes and to cast shadows. . Using the Extract filter The images that are really tough to knockout are those that are in a complex background have highly irregular edges flying hair or very soft edges semitransparent or blurs . Fortunately Photoshop 7 comes with a tool called the Extract filter which improves with every new edition of Photoshop. It s not the most sophisticated of the knockout tools but you don t have to pay extra for it. And most of the time with a little practice you can do a credible job of making the knockout. The lady with the hula-hoop in Figure 9-11 was knocked out with the Extract filter. Figure 9-12 shows you the original image and the resultant knockout. To do this Figure 9-11. The subject was knocked out with the Extract filter. Figure 9-12. The Extract dialog box. 1. Open the image you want to knockout and immediately choose Image Duplicate. There s no hot-key for this so make yourself an Action to do this and then assign that Action a hot-key that you re not using for anything else. You should always duplicate any image that .
